/* ═══════════════════════════════════════════
   partners.css  —  Partners & Sponsors page
   Page-specific styles only.
   Shared variables, nav, footer, modals, reveal
   are in css/shared.css & js/registration.js
═══════════════════════════════════════════ */

/* ══ PARTNERS SECTION ══ */
#partners {
  background: var(--off);
  padding: 2rem 0 0;
}

.section-header {
  text-align: center;
  margin-bottom: 1.2rem;
  padding: 0 2rem;
}
.section-header .body-text {
  max-width: 560px;
  margin: 0 auto;
}

/* ── Sub-section divider ── */
.partners-sub-label {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.partners-sub-label .sub-lbl {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.partners-sub-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── LOGO GRID ── */
.partners-logo-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 3px solid var(--navy);
  margin-bottom: 0;
}

.partner-logo-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--white);
  padding: 2.8rem 2rem;
  min-height: 240px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: background 0.3s, box-shadow 0.3s;
}
.partners-logo-grid .partner-logo-cell:nth-child(4n) { border-right: none; }
.partners-logo-grid .partner-logo-cell:nth-last-child(-n+4):not(.partner-logo-cell-cta) { border-bottom: none; }

.partner-logo-cell::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.partner-logo-cell:hover::before { transform: scaleX(1); }
.partner-logo-cell:hover {
  background: var(--navy);
  box-shadow: 0 8px 32px rgba(8,28,58,0.18);
  z-index: 1;
}

/* ── INCREASED LOGO SIZE ── */
.partner-logo-img {
  max-width: 260px;
  max-height: 160px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(20%) contrast(1.05);
  transition: filter 0.3s, transform 0.3s, opacity 0.3s;
  opacity: 0.9;
}
.partner-logo-cell:hover .partner-logo-img {
  filter: grayscale(0%) brightness(1.12);
  transform: scale(1.06);
  opacity: 1;
}

.partner-logo-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 1.1rem;
  line-height: 1.3;
  transition: color 0.3s;
}
.partner-logo-cell:hover .partner-logo-name { color: var(--white); }

/* CTA cell */
.partner-logo-cell-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.8rem 2rem;
  min-height: 240px;
  background: var(--navy);
  border: 2px dashed rgba(212,152,11,0.4);
  cursor: pointer;
  transition: background 0.3s;
  position: relative;
  overflow: hidden;
  border-bottom: none;
}
.partner-logo-cell-cta:hover { background: var(--gold); }

.partner-cta-icon {
  font-size: 2rem;
  color: var(--gold-lt);
  margin-bottom: 0.9rem;
  transition: color 0.3s;
}
.partner-logo-cell-cta:hover .partner-cta-icon { color: var(--navy); }

.partner-cta-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold-lt);
  transition: color 0.3s;
}
.partner-logo-cell-cta:hover .partner-cta-name { color: var(--navy); }

.partner-cta-sub {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-top: 0.3rem;
  transition: color 0.3s;
}
.partner-logo-cell-cta:hover .partner-cta-sub { color: rgba(8,28,58,0.65); }

/* ── COLLABORATORS SECTION ── */
#collaborators {
  background: var(--off);
  padding: 3rem 0 0;
}

.collab-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 2px solid var(--border);
}

.collab-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--white);
  padding: 2rem 1.5rem;
  min-height: 180px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.collab-grid .collab-cell:nth-child(5n) { border-right: none; }
.collab-grid .collab-cell:last-of-type  { border-bottom: none; }

.collab-cell::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.collab-cell:hover::before  { transform: scaleX(1); }
.collab-cell:hover          { background: var(--navy); }

.collab-logo-img {
  max-width: 160px;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(30%) contrast(1);
  transition: filter 0.3s, transform 0.3s, opacity 0.3s;
  opacity: 0.8;
}
.collab-cell:hover .collab-logo-img {
  filter: grayscale(0%) brightness(1.12);
  transform: scale(1.06);
  opacity: 1;
}

.collab-logo-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 0.8rem;
  line-height: 1.3;
  transition: color 0.3s;
}
.collab-cell:hover .collab-logo-name { color: var(--white); }

.collab-visit {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: 0.5rem;
  transition: color 0.25s;
}
.collab-cell:hover .collab-visit { color: var(--gold-lt); }

/* Become a collaborator CTA banner */
.collab-cta-strip {
  max-width: 1280px;
  margin: 2rem auto 0;
  padding: 0 2rem 4rem;
}
.collab-cta-inner {
  background: var(--navy);
  border-left: 5px solid var(--teal);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.collab-cta-text .lbl    { color: var(--teal); margin-bottom: 0.4rem; }
.collab-cta-text h3      { font-size: 1.5rem; color: var(--white); margin-bottom: 0.4rem; }
.collab-cta-text p       { font-size: 0.85rem; color: rgba(255,255,255,0.6); line-height: 1.6; max-width: 520px; }

.collab-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--teal);
  color: var(--white);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.9rem 1.8rem;
  border: 2px solid var(--teal);
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  transition: background 0.2s, transform 0.2s;
  white-space: nowrap;
  text-decoration: none;
}
.collab-cta-btn:hover { background: transparent; color: var(--teal); transform: translateY(-2px); }

/* Placeholder collab cells */
.collab-cell-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  min-height: 180px;
  background: var(--off);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  border: 2px dashed rgba(14,154,167,0.25);
  cursor: pointer;
  transition: background 0.3s;
  text-decoration: none;
}
.collab-cell-placeholder:hover { background: rgba(14,154,167,0.06); }

.collab-placeholder-icon {
  font-size: 1.4rem;
  color: var(--teal);
  opacity: 0.4;
  margin-bottom: 0.5rem;
}
.collab-placeholder-text {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  opacity: 0.6;
}

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .partners-logo-grid { grid-template-columns: repeat(3, 1fr); }
  .collab-grid        { grid-template-columns: repeat(3, 1fr); }
  .partners-logo-grid .partner-logo-cell:nth-child(4n) { border-right: 1px solid var(--border); }
  .partners-logo-grid .partner-logo-cell:nth-child(3n) { border-right: none; }
  .collab-grid .collab-cell:nth-child(5n)              { border-right: 1px solid var(--border); }
  .collab-grid .collab-cell:nth-child(3n)              { border-right: none; }
}
@media (max-width: 768px) {
  .partners-logo-grid { grid-template-columns: repeat(2, 1fr); }
  .collab-grid        { grid-template-columns: repeat(2, 1fr); }
  .partners-logo-grid .partner-logo-cell:nth-child(3n) { border-right: 1px solid var(--border); }
  .partners-logo-grid .partner-logo-cell:nth-child(2n) { border-right: none; }
  .collab-grid .collab-cell:nth-child(3n)              { border-right: 1px solid var(--border); }
  .collab-grid .collab-cell:nth-child(2n)              { border-right: none; }

  /* ── INCREASED LOGO SIZE ON MOBILE ── */
  .partner-logo-img {
    max-width: 220px;
    max-height: 140px;
  }
}
@media (max-width: 500px) {
  .partners-logo-grid { grid-template-columns: 1fr; }
  .collab-grid        { grid-template-columns: 1fr; }
  .partner-logo-cell,
  .partner-logo-cell-cta,
  .collab-cell,
  .collab-cell-placeholder { border-right: none !important; }
  .collab-cta-inner         { flex-direction: column; }

  /* ── MAXIMUM LOGO SIZE ON SMALLEST SCREENS ── */
  .partner-logo-img {
    max-width: 280px;
    max-height: 170px;
  }
}